Window-sash fastener.



G. W. LAMBERT. WINDOW SASH FASTENER APPLIOA'HON FILED SEPT. 24, 1913 Patented June 30, 1914.

UNITED STATES PATENT OFFICE.

. GEORGE WILLIS LAMBERT, CF RICHMOND, VIRGINIA.

INDOW-sass FAST-ENER.

To all whom it may concern Be it know that I, GEORGE W. LAMBERT, a citizen of he United States, and a resident of Richmond, county of Henrico, State of Virginiag'have invented certain new and useful Imp r venients in W'indow-Sash Fasteners of w ich the following is a full and clear speci cation, reference being had to thevaccom gnying drawings, in which- Figure lfis a face view of a window frame provided w "fill my invention; Fig. 2 a vertical section 1 view thereof; Fig. 3 an enlarged de-t 'il View of the frictional slide; Fig. 4 a h/orizontal section on the line 4-4 of Fig. 2,; and Fig. 5 a view like Fig. 3, but show'ng a modification.

The object of this invention is to provide simple means for holding the sash in a tilted open position, whereby the desired ventila-' tion may be had without admitting dangerous and troublesome currents of air into the room and whereby also the sash may be adjusted to aconvenient position for cleaning operations, as more fully hereinafter set forth.

7 This invention has relation especially though not exclusively to that class of windows in which; the sash a is ivoted at its lower end, as indicated by the iiitter c, to the lower ends of a pair of saslrsupporting vertical barsKor shoes 6 which are adapted to slide vertically within the usual grooves in the inner faces of the windowfram'es, a suitable snap-fastener or other locking device 1!, d being employed to detachably lock the sash in vertical 'alinemeut with the bars b,- that is, in aclosed position. The weight cdrds are as usual attached to the strips or bars I) so that when the sash is'closed the bars b and the sash move up and down together in the same manneras the ordinary window sash. When it is desired to ventilate the room or to bring the sash to a desirable position for cleaning, the upper end of the sash is pulled forcibly inwardly to-disconnect the snap-fastener d, d and the sash is held in its adjustable position by suitable mechanism.

My invention has relation to means for thus holding the sash in its open position.

In its preferred form, my invention consists of a pair of flat metallic links 6 pivoted at their lower ends at f to the outer edges of the sash, the adjacent edges of the sash being Specification'of Letters Patent.

Application filed September 24, 1913. Serial No. 791,546.

Patented J une 30. 1914.

links e, so that the adjacent edges of the I shoes I) and the sash a may come close together when the sash is closed. The upper ends of the links e are each connected to the bars 6 in such manner that the sashmay be forcibly swung upwardly or pulled downwardly and when released will remain in its adjusted position, thereby doing away witll all locking and latching devices to hold :the sashin-its adjusted cation. The preferred manner of accompishing this consi'sts in pivot-ally attaching theupper end of each link 6 to the outer face of a vertical bar 9, which is adapted to slide vertically in a cavity formed in the supporting bar. Along arranged a pair of friction bars h whose facing edges are escalloped. The bar 9 is adapted to slide up and down between these escalloped edges, and, to cause the bar 9 to have frictional engagement with the escalloped edges, said bar is provided upon its opposite side edges with springs 2', which bulge outwardly from the bar suflicientl to resiliently engage inthe recesses of the ars /L, the springs being shaped so as to fit within the curved recesses. Recesses in the bars /z are preferably arranged o posite each other and the bar 9 is preferab y provided with two springs on each side, one being arranged at the upper end and the other at the lower end of the bar.- With this It will be observed that'this invention is I susceptible of modification without departin from the spirit of the invention; in Fig. 5 f have shown a modified device in which the bars it are provided with V-shaped teeth instead of the rounded projections shown in Fig. 3, and, instcad jif springs i, I show a pair of how springs z" provided with proo jections 2' adapted to fit into the projections recessed, as at g, for the reception of these i on the bars h.

Having thus described my invention, what I claim is:-

1. In combination, a sup ort, a swinging sash member having one end pivoted to said support, a link pivotally connecting the swinging member and the support, and means whereby the end connected to the support has a frictional longitudinal adjustment thereon, said means consisting of a serrated bar attached to the sup ort, and a bar pivotally attached to the iink, this latter bar carrying a plurality of resilient projections having frictional engagement in the serrations of the aforesaid bar.

2. In combination, a support, a swinging sash member having one end pivoted to said support, a link pivotally connecting the swinging member and the support, and means whereby the end connected to the support has a frictional longitudinal adjustment thereon, said means consisting of a pair of oppositely facing serrated bars, a bar adapted to slide between said serrated faces and pivotally connected to said link, said sliding bar being provided with resilient frictional means engaging said serrated faces.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

GEORGE WILLIS LAMBERT.

Witnesses:

J. B. MoNroAs'rnn, IRWIN \VEINGER. 

